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指數的觀察
Author:
John Tsang
GeoGebra
New Resources
斐波那契螺旋弧线（表格法-可动态调节）
活动三：应用性质
百分數及其應用
盈利與虧蝕
科氏力 (Coriolis Force)
Discover Resources
點之極線定理 / polar of a point theorem
Pentacle
周界
題三
congruent (SSA,RHS)
Discover Topics
Cylinder
Constructions
Ellipse
Right Triangles
Probability